package com.example.eduservice.controller;


import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.example.commonutils.R;
import com.example.eduservice.entity.EduTeacher;
import com.example.eduservice.entity.vo.TeacherQuery;
import com.example.eduservice.service.EduTeacherService;
import com.example.servicebase.exceptionhandler.GuliException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Map;

/**
 * <p>
 * 讲师 前端控制器
 * </p>
 *
 * @author testjava
 * @since 2021-08-24
 */
@RestController
@RequestMapping("/eduservice/teacher")
//@CrossOrigin //决解跨域问题
public class EduTeacherController {
    //把service注入
    @Autowired
    private EduTeacherService teacherService;

    //1、查询讲师表中所有数据
    @GetMapping("findAll")
    public R findAllTeacher(){
        //调用service的方法实现查询所有操作
        List<EduTeacher> list=teacherService.list(null);

//        try {
//            int i=10/0;
//        } catch (Exception e) {
//            //手动抛出异常，执行自定义异常
//            throw new GuliException(20001,"执行了自定义异常处理...");
//        }
        return  R.ok().data("items",list);
    }

    @DeleteMapping("{id}")
    public R removeTeacher(@PathVariable String id){
        boolean result=teacherService.removeById(id);
        if(result){
         return    R.ok();
        }else {
          return   R.error();
        }
    }
    @GetMapping("pageTeacher/{current}/{limit}")
    public R pageListTeacher(@PathVariable long current,
                             @PathVariable long limit){

        //创建page对象
        Page<EduTeacher> pageTeacher=new Page<>(current,limit);
        //调用方法实现分页
        //调用方法时候，底层封装，把分页所有数据分装到pageTeacher对象里面
        teacherService.page(pageTeacher,null);

        long total=pageTeacher.getTotal();//总记录数
        List<EduTeacher> records = pageTeacher.getRecords();//每一页的list集合

//        Map map=new Hashtable();
//        map.put("total",total);
//        map.put("rows",records);
//        return R.ok().data(map);

        return R.ok().data("total",total).data("rows",records);
    }

    //条件查询带分页的方法
    @PostMapping("pageTeacherCondition/{current}/{limit}")
    public R pageTeacherCondition(@PathVariable long current,
                                  @PathVariable long limit,
                                  @RequestBody(required = false) TeacherQuery teacherQuery){

        //创建page对象
        Page<EduTeacher> pageTeacher=new Page<>(current,limit);
        //构建条件
        QueryWrapper<EduTeacher> wrapper=new QueryWrapper<>();
        //多调教组合查询
        //mybatis学过的动态sql

        String name=teacherQuery.getName();
        Integer level = teacherQuery.getLevel();
        String begin = teacherQuery.getBegin();
        String end = teacherQuery.getEnd();
        //判断条件是否为空，如果不为空拼接条件
        if(!StringUtils.isEmpty(name)){
            //表中的字段名
            wrapper.like("name",name);
        }
        if(!StringUtils.isEmpty(level)){
            wrapper.eq("level",level);
        }
        if(!StringUtils.isEmpty(begin)){
            wrapper.ge("gmt_create",begin);
        }
        if(!StringUtils.isEmpty(end)){
            wrapper.le("gmt_create",end);
        }
        //排序
        wrapper.orderByDesc("gmt_create");
        //调用方法时候，底层封装，把分页所有数据分装到pageTeacher对象里面
        teacherService.page(pageTeacher,wrapper);

        long total=pageTeacher.getTotal();//总记录数
        List<EduTeacher> records = pageTeacher.getRecords();//每一页的list集合
        return R.ok().data("total",total).data("rows",records);
    }

    //添加讲师
    @PostMapping("addTeacher")
    public R addTeacher(@RequestBody EduTeacher eduTeacher){
        boolean save = teacherService.save(eduTeacher);
        if(save){
            return R.ok();
        }else {
            return R.error();
        }
    }

   //根据讲师id进行查询
    @GetMapping("getTeacher/{id}")
    public R getTeacher(@PathVariable String id){
      EduTeacher eduTeacher=teacherService.getById(id);
      return R.ok().data("teacher",eduTeacher);
    }
    //讲师修改功能
    @PostMapping("updateTeacher")
    public R updateTeacher(@RequestBody EduTeacher eduTeacher){
        boolean b = teacherService.updateById(eduTeacher);
        if(b){
            return R.ok();
        }else {
            return R.error();
        }
    }



}

